On Monday, February 28, 2011 09:07:45 am Glenn Edwards did opine: > Gene, > > I think it likely the blades you have were not hardened throughout from > the factory. Only the cutting edge was induction hardened and you > probably removed the heat-treated edge with the first or second > re-sharpening. However, to see what you have, why don't you put the > back-side of the blade against a grinding wheel and see what kind of > sparklers you get. Any old machinist book will have pictures showing > the type of sparks that come from higher carbon steel. > > Glenn > I doubt that I have removed more that .025" from the edges of the blades, total. They're just crap.
In any event, I first found them at ereplacementy.parts.com but then found Amanda blades at toolstoday.com. Wuz gonna get the edged ones but the reviews said they weren't sharp, although once sharpened they were great. Steel T1 18% tungsten blades (highly rated) were $34 a 4 pack, so I bought 3=12 blades for a bit less, and now I'm waiting the human show up for work to cancel the other order. I still like the idea of carbide, and I could probably tune up the carbide ones in the jig I made yesterday, but go back to the diamond wheel. I have tuned up carbide milling tools with those diamond wheels provided its all off the bottom to restore them. And when I get a round tuit, I need to do another 1/4", seems emc miss- configured the .hal file and ran my spindle backwards while carving some cast iron the other day. Since I had it running wide open, I didn't notice anything but what seemed like excessive noise. Duh. Fixed now of course. But the bit is badly chipped. -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) <http://tinyurl.com/ddg5bz> At the foot of the mountain, thunder: The image of Providing Nourishment. Thus the superior man is careful of his words And temperate in eating and drinking. ------------------------------------------------------------------------------ Free Software Download: Index, Search & Analyze Logs and other IT data in Real-Time with Splunk. Collect, index and harness all the fast moving IT data generated by your applications, servers and devices whether physical, virtual or in the cloud. Deliver compliance at lower cost and gain new business insights. http://p.sf.net/sfu/splunk-dev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
